Portable ceiling fan are powered by USB, You can power it up through laptops、PC、USB chargers, power banks USB wall charger (2A) and more. Note: Fan cannot be recharged，must be plugged into a power USB port to function. | Mini ceiling fan assembled after the size diameter is 16.5 inches，Equipped with USB extension cable with switch，Total length of the line 2.7 meters. | The ceiling fan adopts a silent design, which will not interfere with work or sleep. With 6 leaves, good airflow of air and create a cool breeze, enjoying a comfortable summer. | Small ceiling fan great for hot summer and windless day, For smaller space indoor outdoor RV dormitory bed room desk travel camping tent canopy cubicle etc. | Easy to install and portable，It has 6 detachable leaves，Easy to install and disassemble，Small and lightweight, Disassemble it and put it into the backpack, occupying a small space.